Facebook tab page with auto grow height

FB.Canvas.setAutoGrow

<div id="fb-root"></div>
<script>
  window.fbAsyncInit = function () {
      FB.init({
          appId: 'XXXXXXXXXXXX', // App ID
          channelUrl: '//domain.com/channel.html', // Channel file can be .php @ anything
      });

      FB.Canvas.setSize({
          height: 600
      });
      setTimeout("FB.Canvas.setAutoGrow()", 500);

  };

  // Load the SDK Asynchronously
  (function (d) {
      var js, id = 'facebook-jssdk';
      if (d.getElementById(id)) {
          return;
      }
      js = d.createElement('script');
      js.id = id;
      js.async = true;
      js.src = "//connect.facebook.net/en_US/all.js";
      d.getElementsByTagName('head')[0].appendChild(js);
  }(document));
</script>

Adding channel https://developers.facebook.com/docs/reference/javascript/#channel